Richard Osendorf

DC Donaldson Company: 1 patents #5 of 32Top 20%

📍 West St. Paul, MN: #5 of 8 inventorsTop 65%

🗺 Minnesota: #813 of 3,156 inventorsTop 30%

Overall (1997): #88,314 of 185,788Top 50%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5647356	Respirator cartridge with sealing fit test structure and method of use	David Lee	1997-07-15